WO2022114772A1 - Disjoncteur - Google Patents

Disjoncteur Download PDF

Info

Publication number
WO2022114772A1
WO2022114772A1 PCT/KR2021/017395 KR2021017395W WO2022114772A1 WO 2022114772 A1 WO2022114772 A1 WO 2022114772A1 KR 2021017395 W KR2021017395 W KR 2021017395W WO 2022114772 A1 WO2022114772 A1 WO 2022114772A1
Authority
WO
WIPO (PCT)
Prior art keywords
base
circuit breaker
trip mechanism
wiring
nail
Prior art date
Application number
PCT/KR2021/017395
Other languages
English (en)
Korean (ko)
Inventor
오경환
Original Assignee
엘에스일렉트릭 (주)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘에스일렉트릭 (주) filed Critical 엘에스일렉트릭 (주)
Priority to CN202180055099.3A priority Critical patent/CN116097388A/zh
Publication of WO2022114772A1 publication Critical patent/WO2022114772A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release

Definitions

  • the present invention relates to a circuit breaker, and more particularly, to a circuit breaker having a structure capable of improving the reliability of a trip operation.
  • a circuit breaker (MCCB: Molded Case Circuit Breaker) is provided in the wiring and automatically cuts the circuit when an electrical overload condition or a short circuit accident occurs. Accordingly, it is possible to prevent damage to the circuit and the load connected to the wiring due to an electrical accident.
  • MCCB Molded Case Circuit Breaker
  • the circuit breaker for electronic wiring receives a signal from a printed circuit board (PCB) circuit and performs a trip operation when an abnormal current is detected.
  • the trip operation is performed by a trip coil assembly including a movable core.
  • the circuit breaker for wiring according to the prior art is provided with a detection mechanism.
  • the detection mechanism operates according to whether the current flowing through the circuit breaker is abnormal. When an abnormal current is applied, the shooter provided in the detection mechanism part rotates.
  • the shooter With a steady current energized, the shooter restrains the nail. As the shooter rotates, the nail is released from the shooter and rotates, and a mechanism connected to the nail is also rotated. Through the above process, when an abnormal current is passed, the circuit breaker can cut off the current between the external power source and the load.
  • Korean Patent Document No. 10-1198972 discloses a structure of a thermally adjustable tripping device for a circuit breaker for wiring. Specifically, a thermally adjustable tripping device structure having a structure capable of reducing the number of parts and improving assembling and operability by adjusting a distance between a trip shaft and a trip adjusting bolt is disclosed.
  • thermally adjustable trip device structure of this structure still performs the trip operation by a single means. That is, the prior literature does not suggest a method for performing a trip operation in various ways in order to improve the operational reliability of the trip operation.
  • Korean Patent Publication No. 10-2011-0030937 discloses a bimetal trip structure of a circuit breaker for wiring. Specifically, a bimetal trip structure having a structure capable of preventing current concentration by expanding the shape of a support in surface contact with one surface of the bimetal is disclosed.
  • the bimetal trip structure of this structure also has a limitation in that the trip operation is performed by a single means. That is, the prior literature also does not suggest a method for performing a trip operation in various ways in order to improve the operation reliability of the trip operation.
  • Patent Document 1 Korean Patent Document No. 10-1198972 (2012.11.07.)
  • Patent Document 2 Korean Patent Publication No. 10-2011-0030937 (2011.03.24.)
  • An object of the present invention is to provide a circuit breaker for wiring having a structure capable of solving the above-described problems.
  • an object of the present invention is to provide a circuit breaker for wiring having a structure capable of improving the reliability of a trip operation.
  • Another object of the present invention is to provide a circuit breaker for wiring having a structure capable of improving the reliability of a trip operation without adding excessive members.
  • Another object of the present invention is to provide a circuit breaker for wiring having a structure capable of improving the reliability of a trip operation in connection with a breaking operation.
  • Another object of the present invention is to provide a circuit breaker for wiring having a structure that can be easily returned to an original state after a trip operation is performed.
  • the base is formed with a space therein; a nail rotatably coupled to the base to perform a trip operation; and an auxiliary trip mechanism positioned adjacent to the nail and rotatably coupled to the base in a direction toward the nail or in a direction opposite to the nail, wherein the auxiliary trip mechanism includes a body portion extending in one direction ; an auxiliary shooter extending in the one direction and coupled to the body portion; And it provides a circuit breaker for wiring comprising a rotation shaft portion coupled to the body portion and the auxiliary shooter, respectively, rotatably coupled to the base.
  • the base of the circuit breaker may include: a first base forming one side of the base; a second base forming the other side of the base and coupled to the first base;
  • the first base and the second base may include an insertion groove which is formed to be depressed on each surface facing each other, and is a space in which the auxiliary trip mechanism is coupled.
  • the auxiliary trip mechanism of the circuit breaker may include a coupling protrusion that is formed to protrude to the outside of the body portion at one end of the body portion extending direction toward the base, and inserted or drawn out into the insertion groove.
  • a portion of the base of the circuit breaker facing the auxiliary trip mechanism among the portions surrounding the insertion groove is positioned to be biased toward the auxiliary trip mechanism, and a first portion extending obliquely in a direction opposite to the auxiliary trip mechanism part; and a second portion continuous with the first portion and extending horizontally, wherein the coupling protrusion inserted into the insertion groove may be supported by the second portion.
  • the coupling protrusion of the circuit breaker may include: a first surface of the base supported by a portion facing the auxiliary trip mechanism among portions surrounding the insertion groove, a first surface extending horizontally to the outside of the body portion; and a second portion that is continuous with the first surface and extends obliquely toward the body to be opposite to the first surface.
  • the body portion of the circuit breaker is composed of a pair of plates spaced apart from each other and disposed to face each other, and the auxiliary trip mechanism is formed to protrude outward from each end of the pair of plates, and is coupled to the base It may include a bonding protrusion that is formed or separated.
  • the base of the circuit breaker may include: a first base and a second base coupled to face each other in a direction in which the pair of plates are spaced apart from each other; and an insertion groove in which the first base and the second base are recessed on each surface facing each other, and into which the coupling protrusion is inserted or withdrawn.
  • the distance between each end of the coupling protrusion of the circuit breaker is a distance between a portion surrounding the insertion groove on one side facing the auxiliary trip mechanism in a state in which the first base and the second base are coupled. can be longer
  • the distance between each end of the coupling protrusion of the circuit breaker is directed toward the auxiliary trip mechanism in a state where an arc is generated inside the base and the first base and the second base are spaced apart It may be shorter than the distance between the portions surrounding the insertion groove from the side.
  • the auxiliary shooter of the circuit breaker may include a striking surface that forms one side facing the nail and is rotated together with the rotation shaft to contact the nail.
  • the striking surface of the circuit breaker may have a center positioned on the outside of the auxiliary trip mechanism, and may be rounded so as to be convex in a direction opposite to the nail.
  • the circuit breaker includes a lever that is connected to the nail and rotates clockwise or counterclockwise as the nail is rotated, and the body part forms one side facing the lever, and is formed by the lever. It may include a pressing surface that is pressed and rotated together with the rotation shaft.
  • the pressing surface of the circuit breaker may have a center positioned outside the auxiliary trip mechanism, and may be formed to be rounded so as to be convex in a direction opposite to the lever.
  • circuit breaker may include an elastic member positioned between the auxiliary trip mechanism and the base to elastically support the auxiliary trip mechanism.
  • the elastic member of the circuit breaker may be a coil spring or a torsion spring.
  • the circuit breaker for wiring is provided with an auxiliary trip mechanism.
  • the auxiliary trip mechanism is rotatably coupled to the base, and is configured to press or hit the nail by operating in a situation where an abnormal current is energized. At this time, the auxiliary trip mechanism operates independently of the pre-equipped shooter.
  • the auxiliary trip mechanism can assist the nail operation. That is, not only can the trip operation be performed quickly and accurately, but also when a problem occurs in the operation of the shooter, the trip operation can be performed by the auxiliary trip mechanism.
  • an auxiliary trip mechanism is positioned between the nail and the crossbar.
  • the auxiliary trip mechanism is rotatably coupled to the provided base.
  • the auxiliary trip mechanism is positioned adjacent to the nail and the lever, and can be rotated according to the operating state of the circuit breaker. That is, the auxiliary trip mechanism is located outside the base. Further, the power for the auxiliary trip mechanism to strike the nail is provided by the elastic member elastically supporting the auxiliary trip mechanism.
  • the auxiliary trip mechanism can be conveniently added without excessive structural changes or addition of members. Design may be facilitated, and manufacturing cost and man-hours may be reduced.
  • the auxiliary trip mechanism remains engaged with the base. Only when each component constituting the base is spaced apart by the impact generated with the arc inside the base, the auxiliary trip mechanism can be rotated separately from the base. That is, the auxiliary trip mechanism is rotated toward the nail only in a situation in which an arc is generated.
  • the auxiliary trip mechanism when the lever is rotated, the auxiliary trip mechanism may be pressed by the lever. As the lever is rotated to its initial state, the auxiliary trip mechanism may be engaged with the base. At this time, the elastic member that elastically supports the auxiliary trip mechanism is pressed and deformed to store the restoring force.
  • the coupling protrusion which is a portion at which the auxiliary trip mechanism is coupled to the base, has a flat upper surface and an inclined lower surface.
  • the portion surrounding the insertion groove from the upper side is also formed to be inclined at the upper side and flat at the lower side.
  • the engaging projection can be easily inserted into the insertion groove by the engaging projection and the inclined shape of the portion. Furthermore, the inserted engaging projection is not arbitrarily drawn out from the insertion groove by its shape and the flat shape of the part.
  • the coupling between the auxiliary trip mechanism and the base can be easily formed and stably maintained.
  • FIG. 1 is a perspective view showing a circuit breaker for wiring according to an embodiment of the present invention.
  • Fig. 2 is a perspective view showing the internal configuration of the circuit breaker for wiring of Fig. 1;
  • Fig. 3 is a front view showing the circuit breaker for wiring of Fig. 1;
  • Fig. 4 is a cross-sectional view taken along line A-A showing the circuit breaker for wiring of Fig. 1;
  • Fig. 5 is a partially opened perspective view showing the internal configuration of the circuit breaker for wiring of Fig. 1;
  • Fig. 6 is an exploded perspective view showing the circuit breaker for wiring of Fig. 5;
  • FIG. 7 is a perspective view illustrating a base provided in the circuit breaker of FIG. 5 .
  • Fig. 8 is a side view showing the base of Fig. 7;
  • FIG. 9 is a perspective view illustrating a base provided in the circuit breaker of FIG. 5 .
  • Fig. 10 is a side view showing the base of Fig. 9;
  • FIG. 11 is a perspective view illustrating an auxiliary trip mechanism provided in the circuit breaker of FIG. 1 .
  • Fig. 12 is a front view (a) and a rear view (b) showing the auxiliary trip mechanism of Fig. 11;
  • Fig. 13 is a left side view (a) and a right side view (b) showing the auxiliary trip mechanism of Fig. 11;
  • Fig. 14 is a plan view (a) and a bottom view (b) showing the auxiliary trip mechanism of Fig. 11;
  • 15 is a cross-sectional view illustrating a process in which a circuit breaker for wiring performs a trip operation according to an embodiment of the present invention.
  • 16 is a cross-sectional view illustrating a process in which a circuit breaker for wiring is returned to an energized state according to an embodiment of the present invention.
  • energized used in the following description refers to a phenomenon or state in which current flows through a member.
  • conductive connection means that two or more members are connected to each other so that a current or an electrical signal can pass therethrough.
  • the energizable connection may be formed by a conductive wire or the like.
  • abnormal current used in the following description means a current at which the circuit breaker 1 for wiring must perform a trip operation.
  • the abnormal current may be an overcurrent or a fault current.
  • normal current used in the following description means a current that the circuit breaker 1 for wiring does not need to perform a trip operation. That is, the normal current may be used to refer to the remaining currents except for the abnormal current among the currents flowing through the circuit breaker.
  • FIGS. 1 , 2 , 5 , 9 and 11 The terms “top”, “bottom”, “left”, “right”, “front side” and “rear side” used in the following description are shown in FIGS. 1 , 2 , 5 , 9 and 11 . It will be understood with reference to the coordinate system.
  • circuit breaker 1 for wiring according to an embodiment of the present invention is illustrated.
  • the circuit breaker 1 for wiring is connected to an external power source and load so as to be energized.
  • the external power source and the load are connected so as to be energized by the circuit breaker 1 for wiring.
  • the circuit breaker 1 for wiring may allow or block an energized state between an external power source and a load. That is, when an abnormal current is supplied, the contacts 40 provided in the circuit breaker 1 for wiring are spaced apart from each other. This process may be referred to as a trip process. In the above state, the external power source and the load are not energized with each other, and damage to the power source or the load due to the abnormal current can be prevented.
  • the circuit breaker 1 for wiring includes a housing 10 , a fixed contact point 20 , a lever 30 , a contact point 40 , and an arc chute.
  • the circuit breaker 1 further includes a trip unit 100 , a base 200 , an auxiliary trip mechanism 300 , and an elastic member 400 .
  • the housing 10 forms the outer shape of the circuit breaker 1 for wiring.
  • the housing 10 is a portion where the circuit breaker 1 for wiring is exposed to the outside.
  • a space is formed inside the housing 10 .
  • the circuit breaker 1 for wiring is energably connected to an external power source and a load, and various components for performing a trip operation may be mounted.
  • the space formed inside the housing 10 is electrically connected to the outside.
  • the connection is achieved by partially exposing the fixed contact bar 20 to the outside, and connecting a conducting wire member to the exposed portion.
  • the space formed inside the housing 10 communicates with the outside. Contacts 40 to be described later are spaced apart from each other and the generated arc may be extinguished by the arc chute 50 and discharged to the outside. The communication is achieved by an exhaust opening 220 of the base 200, which will be described later.
  • the housing 10 may be formed of a light-weight and high-rigidity material. This is to prevent the weight of the circuit breaker 1 for wiring from being excessively increased.
  • the housing 10 may be formed of a heat-resistant and non-conductive material. This is to prevent damage due to heat generated in the space and to prevent arbitrary conduction with an external power source and load.
  • the housing 10 may be formed of a synthetic resin material such as reinforced plastic.
  • the housing 10 may be provided in any shape capable of mounting a component for operating the circuit breaker 1 for wiring in the space.
  • the housing 10 is provided in a square pillar shape.
  • the fixed contact bar 20 is partially exposed to the outside of the housing 10 .
  • the fixed contact point 20 is a part in which the circuit breaker 1 for wiring is connected to an external power source and a load to be energized.
  • the fixed contact bar 20 is electrically connected to the contact 40 accommodated in the space of the housing 10 .
  • the fixed contact point 20 is provided in several groups and may be disposed at different positions (best shown in FIG. 4 ).
  • An external power source may be energably connected to any one group of the fixed contact points 20 .
  • An external load may be energably connected to the other group of the fixed contact points 20 .
  • the energizable connection may be formed by a conducting wire member (not shown) or the like.
  • a plurality of fixed contact points 20 of each group may be provided. Currents of different phases may be passed through each of the plurality of fixed contact points 20 .
  • a group of fixed contact bars 20 each includes four fixed contact bars 20 .
  • the current passed through the circuit breaker 1 according to the embodiment of the present invention is passed through four currents including three-phase and N-phase.
  • the number of fixed contact bars 20 provided in the fixed contact bars 20 of each group may be changed according to the number of phases of current flowing through the circuit breaker 1 for wiring.
  • a fixed contact 41 is energably connected to the fixed contact unit 20 (best shown in FIG. 4 ).
  • the fixed contact bar 20 and the fixed contact 41 may be integrally formed.
  • the fixed contact points 20 of each group spaced apart from each other are connected to be energized. Accordingly, the external power source and the load respectively connected to the fixed contact point 20 of each group may be connected to each other so as to be energized.
  • the lever 30 is rotated by an external force to allow or cut off electricity between the circuit breaker 1 for wiring and an external power source and a load.
  • the lever 30 is rotatably coupled to the housing 10 .
  • the lever 30 may be rotated together with the nail 120 to be described later.
  • the lever 30 is rotated together with the rotation of the nail 120 so that the operator can easily recognize the state of the circuit breaker 1 for wiring from the outside.
  • the auxiliary trip mechanism 300 is pressed to return to a state before the trip operation is performed, that is, to a state in which an external power source and a load are energably connected. A detailed description thereof will be provided later.
  • the lever 30 is partially exposed to the outside of the housing 10 .
  • the operator can easily recognize the operating state of the circuit breaker 1 for wiring through the exposed portion of the lever 30 .
  • the contact 40 is contacted or spaced apart to allow or release an energized state between an external power source and a load energably connected to the circuit breaker 1 for wiring.
  • the contact 40 comprises a fixed contact 41 , a movable contact 42 and a shaft 43 .
  • the fixed contact 41 is electrically connected to the fixed contact stand 20 .
  • the fixed contact 41 is in contact with or spaced apart from the movable contact 42 .
  • the fixed contact points 20 spaced apart from each other are connected to be energized. Accordingly, the external power and the load connected to each of the fixed contact points 20 to be energized may be energized with each other.
  • the fixed contact 41 is fixedly coupled to the fixed contact stand 20 . Accordingly, it will be understood that the contact and separation is achieved by rotating the movable contact 42 and the shaft 43 to which the movable contact 42 is connected.
  • a plurality of fixed contacts 41 may be provided.
  • the plurality of fixed contact points 41 may be respectively coupled to the plurality of fixed contact points 20 .
  • two fixed contacts 41 are provided and are respectively coupled to the fixed contact points 20 positioned on the front side and the rear side.
  • four fixed contact bars 20 are disposed on the front side and the rear side, respectively. Accordingly, four fixed contacts 41 are also provided on the front side and the rear side, respectively, and are coupled to each fixed contact stand 20 .
  • the movable contact 42 is in contact with or spaced apart from the fixed contact 41 as the shaft 43 is rotated.
  • the circuit breaker 1 for wiring connects an external power source and a load so as to be able to conduct electricity with each other.
  • the movable contact 42 is connected to a movable contact stand (not shown).
  • the movable contact bar (not shown) is connected to the shaft 43 and rotates together. Accordingly, when the shaft 43 is rotated, the movable contact 42 is also rotated, so that it can be in contact with and spaced apart from the fixed contact 41 .
  • a plurality of movable contacts 42 may be provided.
  • the plurality of movable contacts 42 may be in contact with or spaced apart from the plurality of fixed contacts 41 , respectively.
  • two movable contacts 42 are provided and disposed on the front side and the rear side, respectively.
  • the shaft 43 is connected to the lever 30 and the nail 120 to rotate together.
  • a movable contact bar (not shown) is coupled to the shaft 43 .
  • the movable contact stand (not shown) and the movable contact 42 connected thereto are rotated together.
  • the shaft 43 is rotated in a direction in which the movable contact 42 is spaced apart from the fixed contact 41 (clockwise in the embodiment shown in FIG. 4 ).
  • the shaft 43 has a movable contact 42 and a fixed contact (41) is rotated in a contacting direction (counterclockwise direction in the embodiment shown in FIG. 4).
  • the arc chute 50 extinguishes the arc generated when the fixed contact 41 and the movable contact 42 are spaced apart and discharges to the outside.
  • the arc chute 50 may include a plurality of grids formed of a magnetic material to induce the generated arc. This is due to the fact that the arc is a flow of electrons.
  • the arc chute 50 is positioned between the stationary contact 41 and the exhaust opening 220 .
  • the arc extending from the fixed contact 41 along the movable contact 42 may pass through the arc chute 50 and be extinguished to proceed toward the exhaust opening 220 .
  • a plurality of arc chute 50 may be provided.
  • the plurality of arc chutes 50 may be disposed at different positions.
  • the arc chute 50 is provided with two, respectively, located on the front side and the rear side. This is due to the fact that two fixed contacts 41 through which a current of one phase is passed are provided.
  • the circuit breaker 1 for wiring includes a trip unit 100 .
  • the trip unit 100 When an abnormal current is applied to the circuit breaker 1 for wiring, the trip unit 100 is operated by a means (not shown) to detect it to perform a trip operation. That is, the trip unit 100 substantially performs the role of the circuit breaker 1 for wiring.
  • the trip unit 100 is connected to the lever 30 .
  • the other may also be rotated. Accordingly, the lever 30 is rotated by the trip operation of the trip unit 100 . Also, the trip unit 100 may be returned to an initial state by rotation of the lever 30 .
  • the trip unit 100 is connected to the shaft 43 .
  • the trip unit 100 may be directly connected to the shaft 43 or indirectly connected through other members such as the lever 30 .
  • the shaft 43 is rotated in a direction (clockwise in the embodiment shown in FIG. 4 ) in which the fixed contact 41 and the movable contact 42 are spaced apart.
  • the rotation of the trip unit 100 is interlocked with the lever 30 .
  • the shaft 43 is rotated in a direction in which the fixed contact 41 and the movable contact 42 are in contact (counterclockwise in the embodiment shown in FIG. 4 ).
  • the trip unit 100 is mounted inside the housing 10 . Specifically, the trip unit 100 is rotatably accommodated in the housing 10 in clockwise and counterclockwise directions.
  • the trip unit 100 includes a shooter 110 , a nail 120 , a crossbar 130 , a main rotation shaft 140 , and a sub rotation shaft 150 .
  • the shooter 110 is coupled to the nail 120 to limit any rotation of the nail 120 .
  • the shooter 110 is rotated together to release the nail 120 .
  • the nail 120 being elastically supported rotates the shaft 43 in a direction in which the movable contact 42 is spaced apart from the fixed contact 42 , thereby performing a trip operation.
  • the shooter 110 is accommodated in the space of the housing 10 .
  • the shooter 110 may rotate clockwise or counterclockwise in the space.
  • the shooter 110 is coupled to the crossbar 130 .
  • the shooter 110 may be rotated together with the crossbar 130 . Accordingly, when a bimetal (not shown) or the like strikes the crossbar 130 by a detection means (not shown) and the crossbar 130 is rotated, the shooter 110 may also be rotated.
  • One of the ends of the shooter 110 facing the nail 120 may be formed in a hook shape.
  • the end of the shooter 110 may be combined with the end of the nail 120 which is also formed in a hook shape.
  • the end of the shooter 110 constrains the end of the nail 120 to prevent any rotation of the nail 120 .
  • the end of the shooter 110 releases the end of the nail 120 . Accordingly, the nail 120 is rotated and a trip operation may be performed.
  • the central axis on which the nail 120 is rotated may be defined as the main rotation axis 140 . A detailed description thereof will be provided later.
  • the nail 120 is constrained or released by the shooter 110 . As described above, the nail 120 is connected to the shaft 43 , so that the fixed contact 41 and the movable contact 42 may be spaced apart by the rotation of the nail 120 .
  • the nail 120 may press the lever 30 . Specifically, the nail 120 is rotated after being released from the shooter 110 and hits the lever 30 . Accordingly, the lever 30 is also rotated, so that an external operator can easily recognize the circuit breaker 1 for wiring.
  • the nail 120 is pressed by the lever 30 and may return to its original position. Accordingly, the end of the nail 120 is constrained again by the end of the shooter 110 , and arbitrary rotation of the nail 120 can be prevented.
  • the circuit breaker 1 for wiring is a state in which an external power source and a load are electrically connected to each other.
  • the circuit breaker 1 for wiring according to an embodiment of the present invention further includes not only the shooter 110 but also the auxiliary trip mechanism 300 as a component for rotating the nail 120 .
  • the nail 120 is also rotated by the auxiliary trip mechanism 300 when the trip operation is performed, the reliability of the trip operation can be improved. A detailed description thereof will be provided later.
  • the crossbar 130 is rotated by being pressed by a detection means (not shown) such as bimetal (not shown).
  • the crossbar 130 is connected to the shooter 110 , and when the crossbar 130 is rotated, the shooter 110 may also be rotated.
  • the crossbar 130 is rotatably accommodated in the inner space of the housing 10 .
  • the crossbar 130 is positioned on the opposite side of the lever 30 with respect to the nail 120 .
  • the crossbar 130 is located on the front side of the nail 120 . Accordingly, it will be appreciated that the lever 30 is positioned to be positioned on the rear side of the nail 120 .
  • the crossbar 130 may be rotated by being hit or pressed by a detection means (not shown).
  • the detection means (not shown) may be provided with a bimetal (not shown) or the like.
  • the crossbar 130 is connected to the shooter 110 .
  • the shooter 110 is also rotated to release the nail 120 .
  • the main rotation shaft 140 rotatably supports the nail 120 .
  • the main rotation shaft 140 functions as a shaft on which the nail 120 is rotated.
  • the nail 120 may be rotated clockwise or counterclockwise with respect to the main rotation shaft 140 .
  • the main rotation shaft 140 is located inside the housing 10 .
  • the main rotation shaft 140 may be positioned adjacent to the lever 30 .
  • the main rotation shaft 140 has a circular cross section and has a cylindrical shape extending in the left and right directions, but the shape may be changed.
  • the sub-rotation shaft 150 is positioned adjacent to the main rotation shaft 140 (refer to FIGS. 15 and 16).
  • the sub-rotation shaft 150 rotatably supports the auxiliary trip mechanism 300 .
  • the sub-rotation shaft 150 may be through-coupled to the rotation shaft part 330 of the auxiliary trip mechanism 300 .
  • the auxiliary trip mechanism 300 may rotate clockwise or counterclockwise about the sub-rotation shaft 150 .
  • the sub-rotation shaft 150 is located adjacent to the main rotation shaft 140, but spaced apart from each other. In the illustrated embodiment, the sub-rotation shaft 150 is located below the main rotation shaft 140 .
  • the auxiliary trip mechanism 300 is elastically supported by the elastic member 400 .
  • the auxiliary trip mechanism 300 receives a force in the opposite direction to the base 200 by the restoring force stored by the elastic member 400, and upward in the illustrated embodiment. .
  • the sub-rotation shaft 150 limits the movement of the auxiliary trip mechanism 300 to a rotational motion. Accordingly, the auxiliary trip mechanism 300 may be rotated toward the nail 120 to press the nail 120 without being arbitrarily separated or separated.
  • the sub-rotation shaft 150 has a circular cross-section and has a cylindrical shape extending in the left and right directions, but the shape may be changed.
  • the circuit breaker 1 for wiring includes a base 200 .
  • the base 200 is formed in a space therein, and a part of the components of the circuit breaker 1 for wiring is mounted therein.
  • the contact point 40 and the arc chute 50 may be accommodated inside the base 200 .
  • the space of the base 200 communicates with the outside by an exhaust opening 220 .
  • the arc generated in the space of the base 200 may be discharged to the outside through the exhaust opening 220 .
  • the space of the base 200 is electrically connected to the outside by a fixed contact point 20 .
  • the base 200 may be formed of a material having high heat resistance having sufficient rigidity. This is to prevent damage due to the generation of high-temperature and high-pressure arcs.
  • the base 200 may be formed of a synthetic resin material such as reinforced plastic.
  • a plurality of bases 200 may be provided. Components for passing currents of different phases to each other may be mounted on the plurality of bases 200 . In the illustrated embodiment, four bases 200 are provided and arranged to be spaced apart from each other in parallel in the left and right direction.
  • the base 200 supports the auxiliary trip mechanism 300 . While the circuit breaker 1 for wiring permits external power and load to flow, the base 200 limits any movement of the auxiliary trip mechanism 300 .
  • the base 200 releases the auxiliary trip mechanism 300 . Accordingly, the auxiliary trip mechanism 300 presses or strikes the nail 120 to improve the reliability of the trip operation. A detailed description thereof will be provided later.
  • the base 200 may be formed by combining a plurality of components.
  • the base 200 is formed by combining the first base 200a positioned on the left and the second base 200b positioned on the right.
  • first base 200a and the second base 200 are formed to be symmetrical to each other with respect to the axis of the extension direction, the front-rear direction in the illustrated embodiment.
  • the first base 200a and the second base 200b will be collectively referred to as the base 200 .
  • the base 200 includes a shaft receiving portion 210 , an exhaust opening 220 , an arc chute receiving portion 230 , a contact receiving portion 240 , and an insertion groove 250 .
  • the shaft accommodating part 210 is a space in which the shaft 43 is rotatably accommodated.
  • the shaft 43 may be rotated clockwise or counterclockwise while being accommodated in the shaft accommodating part 210 .
  • the shaft receiving part 210 is located adjacent to the center of the base 200 .
  • the shaft receiving portion 210 is located between the two arc chute receiving portion (230). This is due to the fact that the circuit breaker 1 for wiring according to an embodiment of the present invention has the fixed contact points 20 positioned in the front and rear directions with respect to the shaft 43 .
  • a plurality of through-holes are formed in the outer surface of the base 200 surrounding the shaft receiving part 210, the left surface or the right surface in the illustrated embodiment.
  • a shaft member (not shown) is through-coupled to the through hole located near the center.
  • two arc-shaped through-holes are formed on the radially outer side of the through-hole located near the center.
  • a transmission member (not shown) is coupled to the arc-shaped through hole.
  • the transmission member (not shown) is respectively coupled to the plurality of shafts 43 . Accordingly, when any one of the plurality of shafts 43 is rotated, the other shafts 43 are also rotated together.
  • the exhaust opening 220 is a passage through which the arc generated by the fixed contact 41 and the movable contact 42 being spaced apart is extinguished by the arc chute 50 and then discharged to the outside of the base 200 .
  • the exhaust opening 220 is formed through, and communicates with the internal space of the base 200 and the outside.
  • the exhaust opening 220 communicates with the arc chute receiving part 230 .
  • the exhaust opening 220 is located adjacent to the arc chute receiving portion 230 .
  • a plurality of exhaust openings 220 may be provided.
  • the plurality of exhaust openings 220 may communicate with the interior space of the base 200 and the exterior at different positions.
  • the exhaust opening 220 is formed on the front lower side and the rear upper side, respectively.
  • exhaust openings 220 may be changed according to the number of arc chute 50 and arc chute receiving portion 230 .
  • the arc chute receiving part 230 is a space in which the arc chute 50 is accommodated.
  • the arc chute receiver 230 is positioned adjacent to the shaft receiver 210 and the exhaust opening 220 .
  • the arc chute receiving portion 230 communicates with the shaft receiving portion 210 and the exhaust opening 220, respectively.
  • a plurality of arc chute receiving units 230 may be provided.
  • the plurality of arc chute accommodating units 230 may accommodate the arc chute 50 at different positions.
  • the arc chute receiving portion 230 is formed on the front side and the rear side, respectively.
  • the arc chute accommodating part 230 is disposed to face each other with the shaft accommodating part 210 interposed therebetween.
  • the position and number of the arc chute accommodating part 230 may be changed according to the position and number of the arc chute 50 .
  • the contact accommodating part 240 is a space for accommodating the fixed contact pole 20 .
  • the contact accommodating part 240 is positioned adjacent to the shaft accommodating part 210 and the arc chute accommodating part 230, respectively.
  • the contact accommodating part 240 communicates with the shaft accommodating part 210 . Accordingly, the fixed contact 41 connected to the fixed contact stand 20 may be in contact with or spaced apart from the movable contact 42 .
  • a plurality of contact accommodating units 240 may be provided.
  • the plurality of contact receiving units 240 may accommodate the fixed contact units 20 at different positions.
  • the contact accommodating portion 240 is respectively located on the upper side of the front and the lower side of the rear.
  • the contact accommodating part 240 may be positioned opposite to the exhaust opening 220 in the vertical direction. Accordingly, the fixed contact 41 or the movable contact 42 and the fixed contact point 20 are not located on the path along which the generated arc progresses, so damage caused by the arc can be minimized.
  • the insertion groove 250 is a portion to which the auxiliary trip mechanism 300 is coupled to the base 200 .
  • the insertion groove 250 is recessed, so that the coupling protrusion 312 of the auxiliary trip mechanism 300 can be inserted.
  • the base 200 is formed by combining the first base 200a positioned on the left and the second base 200b positioned on the right.
  • the insertion groove 250 is formed to be depressed in the opposite direction to the first base 200a and the second base 200b on each side facing each other.
  • the insertion groove 250 formed in the first base 200a is recessed from the right side to the left side.
  • the insertion groove 250 formed in the second base 200b is recessed from the left side to the right side.
  • the insertion groove 250 is located on one side of the base 200 facing the lever 30 , and on the upper side in the illustrated embodiment.
  • the auxiliary trip mechanism 300 is positioned between the nail 120 and the crossbar 130 , and the insertion groove 250 is positioned on the front side of the base 200 .
  • the upper surface of the auxiliary trip mechanism 300 is easily inserted, it can be formed in a structure that prevents arbitrary separation. have.
  • the upper surface of the portion surrounding the insertion groove 250 from the upper side may be formed to be inclined downward.
  • the lower surface of the portion surrounding the insertion groove 250 from the upper side may be formed horizontally.
  • the coupling protrusion 312 of the auxiliary trip mechanism 300 may be easily inserted into the insertion groove 250 by being pressed from the upper side to the lower side.
  • the inserted coupling protrusion 312 is not arbitrarily separated from the insertion groove 250 as long as the base 200 does not swing.
  • the circuit breaker 1 for wiring includes an auxiliary trip mechanism 300 and an elastic member 400 .
  • the auxiliary trip mechanism 300 is rotated as the arc is generated to strike the nail 120 . Therefore, when an abnormal current is applied to the circuit breaker 1 for wiring, the nail 120 is not only released by the shooter 110 but also pressurized by the auxiliary trip mechanism 300, thereby improving the reliability of the trip operation. .
  • the auxiliary trip mechanism 300 is rotatably coupled to the base 200 . This is achieved by rotatably coupled to the sub-rotation shaft 150 , the auxiliary trip mechanism 300 .
  • the auxiliary trip mechanism 300 In a state in which a normal current is supplied to the circuit breaker 1 for wiring, the auxiliary trip mechanism 300 is not arbitrarily moved by the base 200 .
  • the auxiliary trip mechanism 300 When an abnormal current is passed through the circuit breaker 1 for wiring and an arc is generated, the auxiliary trip mechanism 300 is released from the base 200 and rotates toward the nail 120 around the sub-rotation shaft 150 .
  • the base 200 is formed by combining the first base 200a and the second base 200b.
  • the first base 200a and the second base 200b are spaced apart from each other by a predetermined distance by the impact.
  • the auxiliary trip mechanism 300 presses the elastic member 400 and is coupled to the base 200 . Therefore, when the first base 200a and the second base 200b are spaced apart from each other, the engaging protrusion 312 that was accommodated in the insertion groove 250 of the base 200 by the restoring force stored by the elastic member 400 is It is drawn out from the insertion groove 250 .
  • the auxiliary trip mechanism 300 is rotatably coupled to the sub-rotation shaft 150 , and its movement is limited to rotation in a direction toward the nail 120 and a direction opposite to the nail 120 .
  • the auxiliary trip mechanism 300 drawn out from the insertion groove 250 may be rotated toward the nail 120 to press or hit the nail 120 .
  • the auxiliary trip mechanism 300 is coupled to the base 200 .
  • the coupling protrusion 312 may be inserted into the insertion groove 250 to be coupled to the base 200 .
  • the auxiliary trip mechanism 300 is rotatably coupled to the base 200 . Specifically, the auxiliary trip mechanism 300 is rotatably coupled to the sub-rotation shaft 150 .
  • the auxiliary trip mechanism 300 may be positioned between the nail 120 and the crossbar 130 . That is, referring back to FIG. 4 , the crossbar 130 , the auxiliary trip mechanism 300 , and the nail 120 are sequentially disposed from the front to the rear.
  • Auxiliary trip mechanism 300 is positioned adjacent to nail 120 .
  • the auxiliary trip mechanism 300 is located on the upper side of the base 200 and below the nail 120 .
  • the auxiliary trip mechanism 300 may be formed of a light-weight and high-rigidity material. This is to prevent physical damage when the nail 120 is hit or pressed by the lever 30 .
  • the auxiliary trip mechanism 300 may be formed of an insulating material. This is to prevent arbitrary conduction of the current passed to the circuit breaker 1 for wiring.
  • the auxiliary trip mechanism 300 may be formed of a synthetic resin material such as insulating reinforced plastic or a ceramic material.
  • the auxiliary trip mechanism 300 includes a body portion 310 , an auxiliary shooter 320 , a rotation shaft portion 330 , and a reinforcing rib 340 .
  • the body portion 310 forms the outer shape or body of the auxiliary trip mechanism 300 .
  • the body portion 310 is a portion to which the auxiliary trip mechanism 300 is coupled to the base 200 .
  • the body portion 310 is formed to extend in a direction toward the base 200 and a direction opposite thereto, and in the vertical direction in the illustrated embodiment.
  • the body 310 may be formed of a pair of plates facing each other.
  • the body portion 310 is positioned on the left and right, respectively, and is formed by a pair of plates facing each other.
  • the pair of plates may be positioned to be spaced apart by a predetermined distance. The distance may be changed according to the shape of the lever 30 .
  • the body 310 is coupled to the auxiliary shooter 320 .
  • the auxiliary shooter 320 may also be rotated together. Accordingly, the auxiliary shooter 320 presses the nail 120 to improve the reliability of the trip operation.
  • the body portion 310 is coupled to the rotation shaft portion 330 .
  • the body part 310 may be rotated about the sub-rotation shaft 150 coupled to the rotation shaft part 330 .
  • the body 310 is coupled to the reinforcing rib 340 .
  • the body portion 310 may be firmly maintained in a coupled state with the rotation shaft portion 330 by the reinforcing ribs 340 .
  • the body portion 310 includes a pressing surface 311 and a coupling protrusion 312 .
  • the pressing surface 311 is a portion pressed by the lever 30 when the lever 30 is rotated.
  • the pressing surface 311 comes into contact with the lever 30 and is pressed.
  • the auxiliary trip mechanism 300 may be rotated in a direction opposite to the nail 120 to be re-inserted into the insertion groove 250 from which it was drawn out. A detailed description thereof will be provided later.
  • the pressing surface 311 may be defined as any one of the end surfaces of the body part 310 in the extending direction. Also, the pressing surface 311 may be defined as a surface facing the lever 30 or the nail 120 among the surfaces of the body 310 . In other words, the pressing surface 311 may be defined as a surface opposite to the base 200 among the surfaces of the body 310 .
  • the pressing surface 311 may be defined as the upper surface of the body 310 .
  • the pressing surface 311 may be formed to have an arc-shaped cross-section having a predetermined curvature.
  • the center of the cross-section of the pressing surface 311 may be located outside the auxiliary trip mechanism 300 .
  • the center of the cross-section of the pressing surface 311 may be located adjacent to the lever 30 or the nail 120 .
  • the pressing surface 311 is formed to be convex in a direction opposite to the lever 30 or the nail 120 .
  • the body portion 310 may be formed of a pair of plates facing each other. Accordingly, the pressing surface 311 may form an upper surface of each of the pair of plates.
  • the coupling protrusion 312 is a portion at which the auxiliary trip mechanism 300 is coupled to the base 200 .
  • the coupling protrusion 312 is located on the other side of the body portion 310 opposite to the pressing surface 311, on the lower side in the illustrated embodiment. In other words, the coupling protrusion 312 is located at one end toward the base 200 among the ends in the extension direction of the body portion 310 .
  • the coupling protrusion 312 is formed to extend outwardly from the one end (ie, the lower end) of the body portion 310 .
  • the first coupling protrusion 312a formed on the body portion 310 located on the left side extends toward the left side.
  • the second coupling protrusion 312b formed on the body portion 310 located on the right side is formed to extend toward the right side.
  • the coupling protrusion 312 may extend to form a predetermined angle with the body portion 310 .
  • the predetermined angle may be a right angle.
  • the coupling protrusion 312 is accommodated in or withdrawn from the insertion groove 250 .
  • the upper and lower sides of the coupling protrusion 312 may be formed to have different shapes.
  • the upper portion of the coupling protrusion 312 extends horizontally.
  • a lower portion of the coupling protrusion 312 is inclined downwardly extending from an end of the upper portion toward the body portion 310 .
  • the shape of the coupling protrusion 312 is moved from the upper side to the lower side so that it can be easily inserted into the insertion groove 250 , but when it is moved from the lower side to the upper side, it is not easily drawn out from the insertion groove 250 .
  • the shape of the portion surrounding the insertion groove 250 from the upper side is formed to be inclined to the lower side, the lower shape is formed horizontally.
  • the coupling protrusion 312 may be easily accommodated in the insertion groove 250 . Conversely, even when the auxiliary trip mechanism 300 is pressed against the base 200 , the coupling protrusion 312 is not drawn out from the insertion groove 250 .
  • a plurality of coupling protrusions 312 may be provided.
  • the plurality of coupling protrusions 312 may be respectively coupled to a plurality of plates constituting the body portion 310 .
  • the coupling protrusion 312 is provided with two, including the first coupling protrusion 312a provided on the left plate and the second coupling protrusion 312b provided on the right plate.
  • the extended length of the first coupling protrusion 312a is formed shorter than the extended length of the second coupling protrusion 312b.
  • the extension length of the first coupling protrusion 312a and the second coupling protrusion 312b may be changed according to the shape of the recessed length of the insertion groove 250 or the like.
  • the distance between the outer end (ie, the left end) of the first coupling protrusion 312a and the outer end (ie, the right end) of the second coupling protrusion 312b is a state in which an arc is not generated, that is, a steady current is It may be determined according to the coupling structure of the first base 200a and the second base 200b in the current state.
  • the distance between the respective outer ends of the first coupling protrusion 312a and the second coupling protrusion 312b is the sum of the depression lengths of the insertion grooves 250 respectively formed in the first and second bases 200a and 200b. It is preferable to be formed below.
  • the distance between the respective outer ends of the first coupling protrusion 312a and the second coupling protrusion 312b, the first and second bases 200a and 200b, respectively, the insertion grooves 250 formed in the upper side surrounding the It is preferably determined to exceed the shortest distance between the parts.
  • the coupling protrusion 312 may be fitted or press-fitted to the insertion groove 250 .
  • the coupling protrusion 312 inserted into the insertion groove 250 is not arbitrarily drawn out from the insertion groove 250 unless an arc is generated inside the base 200 .
  • the auxiliary shooter 320 is rotated together as the auxiliary trip mechanism 300 is rotated, thereby pressing the nail 120 . Accordingly, the nail 120 can be rotated not only by the shooter 110 but also by the auxiliary trip mechanism 300, so that the reliability of the trip operation can be improved.
  • the auxiliary shooter 320 is coupled to the body 310 .
  • the auxiliary shooter 320 may be rotated together with the body 310 .
  • the auxiliary shooter 320 is coupled to the outside (ie, the left side) of the plate positioned on the left of the pair of plates constituting the body portion 310 .
  • the position of the auxiliary shooter 320 may be changed according to the position of the nail 120 .
  • the auxiliary shooter 320 extends in the direction in which the body portion 310 extends, in the illustrated embodiment, in the vertical direction.
  • the shape of the auxiliary shooter 320 may be any shape that can be rotated to press the nail 120 .
  • the auxiliary shooter 320 is connected to the rotation shaft 330 .
  • the auxiliary shooter 320 may also rotate clockwise or counterclockwise around the rotation shaft 330 .
  • the secondary shooter 320 includes a striking face 321 .
  • the striking surface 321 is a part that strikes or presses the nail 120 as the auxiliary trip mechanism 300 rotates toward the nail 120 .
  • the striking surface 321 may strike the nail 120 .
  • the striking surface 321 may be defined as any one surface of each end surface in the extension direction of the auxiliary shooter 320 . Also, the striking surface 321 may be defined as a surface facing the lever 30 or the nail 120 among the surfaces of the auxiliary shooter 320 . In other words, the striking surface 9321 may be defined as a surface opposite to the base 200 among the surfaces of the auxiliary shooter 320 .
  • the striking surface 321 may be defined as the upper surface of the auxiliary shooter 320 .
  • the striking surface 321 may be formed to have an arc-shaped cross-section having a predetermined curvature.
  • the center of the cross-section of the striking surface 321 may be located outside the auxiliary trip mechanism 300 .
  • the center of the cross-section of the striking face 321 may be located adjacent to the lever 30 or the nail 120 .
  • the striking surface 321 is formed to be convex in a direction opposite to the lever 30 or the nail 120 .
  • the rotation shaft 330 functions as a central shaft on which the auxiliary trip mechanism 300 is rotated.
  • the auxiliary trip mechanism 300 may be rotatably coupled to the base 200 .
  • the sub-rotation shaft 150 is rotatably coupled to the rotation shaft part 330 .
  • the rotating shaft part 330 is connected to the body part 310 .
  • the body portion 310 may be rotated in a direction toward the nail 120 and in a direction opposite thereto about the rotation shaft portion 330 .
  • the rotation shaft 330 is connected to the auxiliary shooter 320 .
  • the auxiliary shooter 320 may be rotated in a direction toward the nail 120 and in a direction opposite thereto about the rotation shaft 330 .
  • the rotating shaft part 330 may be connected to the body part 310 by the reinforcing ribs 340 . Accordingly, the coupling state between the rotating shaft portion 330 and the body portion 310 may be firmly maintained.
  • the rotating shaft portion 330 is coupled to the body portion 310 , the auxiliary shooter 320 and the reinforcing rib 340 from one side facing the nail 120 , that is, the rear side.
  • the position of the rotation shaft part 330 may be changed according to the position of the sub rotation shaft 150 .
  • the rotation shaft portion 330 is formed to extend in the direction in which a pair of plates constituting the body portion 310 are spaced apart, in the illustrated embodiment, in the left and right directions.
  • the rotation shaft portion 330 has a cylinder shape including a hollow portion 331 penetratingly formed therein in the extending direction.
  • the shape of the rotation shaft 330 may be any shape in which the auxiliary trip mechanism 300 can be rotatably coupled to the base 200 .
  • the rotation shaft portion 330 includes a hollow portion (331).
  • the hollow part 331 is a space through which the sub-rotation shaft 150 is coupled.
  • the hollow part 331 is formed to extend in the direction in which the rotation shaft part 330 extends, in the illustrated embodiment, in the left and right directions.
  • Each end of the hollow part 331 is formed to be open, respectively, and communicates with the outside.
  • the hollow portion 331 has a circular cross section of the inner circumference of the rotation shaft portion 330 surrounding it.
  • the reinforcing rib 340 firmly maintains the coupling state between the body portion 310 and the rotation shaft portion 330 .
  • the reinforcing ribs 340 are respectively coupled to the body portion 310 and the rotation shaft portion 330 .
  • the body portion 310 may be provided as a pair of plates facing each other. Accordingly, a pair of reinforcing ribs 340 may also be provided to be respectively coupled to the body portion 310 and the rotation shaft portion 330 .
  • the reinforcing rib 340 includes any one of the reinforcing ribs 340 and the body 310 coupled to the left plate and the rotation shaft 330 constituting the body 310 , respectively. and another reinforcing rib 340 coupled to the right side plate and the rotation shaft 330 constituting it.
  • the reinforcing rib 340 has a triangular cross section and is provided in a triangular plate shape having a thickness in the vertical direction.
  • the shape of the reinforcing rib 340 may be any shape capable of stably maintaining the coupling state between the body part 310 and the rotation shaft part 330 .
  • the elastic member 400 is respectively coupled to the base 200 and the auxiliary trip mechanism 300 to elastically support the auxiliary trip mechanism 300 .
  • the elastic member 400 In a state in which the coupling protrusion 312 of the auxiliary trip mechanism 300 is inserted into the insertion groove 250 , that is, in a state in which the auxiliary trip mechanism 300 and the base 200 are coupled, the elastic member 400 is pressed to shape It is deformed and stores the restoring force.
  • the elastic member 400 in a state in which a normal current is energized, the elastic member 400 is in a state in which the restoring force is stored.
  • the direction of the restoring force is a direction in which the elastic member 400 is restored to its original shape, that is, a direction opposite to the base 200 or a direction toward the nail 120 .
  • the coupling protrusion 312 is fitted or pressed into the insertion groove 250 to limit withdrawal.
  • the coupling protrusion 312 may be withdrawn from the insertion groove 250 .
  • the elastic member 400 is changed to its original shape and transmits the stored restoring force to the auxiliary trip mechanism 300 .
  • the movement of the auxiliary trip mechanism 300 is limited only to the rotation in the direction toward the nail 120 by the rotation shaft 330 .
  • the auxiliary trip mechanism 300 strikes or presses the nail 120 to help the trip operation.
  • the auxiliary trip mechanism 300 presses the elastic member 400 by the rotationally operated lever 30 and is coupled to the insertion groove 250 . Accordingly, the elastic member 400 is deformed again and stores the restoring force.
  • the elastic member 400 stores the restoring force in a state in which a normal current is energized, and provides the stored restoring force to the auxiliary trip mechanism 300 in a state in which an abnormal current is energized.
  • the elastic member 400 may be provided at any position capable of elastically supporting the auxiliary trip mechanism 300 .
  • the elastic member 400 is located on the lower side of the auxiliary shooter 320 and the upper side of the base 200 .
  • the elastic member 400 may be provided in any shape capable of storing restoring force by shape deformation and transmitting the stored restoring force to other members.
  • the elastic member 400 is provided in the form of a coil spring.
  • the elastic member 400 may be provided in the form of a torsion spring.
  • the circuit breaker 1 for wiring includes an auxiliary trip mechanism 300 .
  • the nail 120 performing the trip operation is rotated by being pressed or struck by the auxiliary trip mechanism 300 as well as the shooter 110 . Accordingly, the trip operation can be performed quickly and reliably.
  • FIG. 15 a process in which a trip operation is performed in the circuit breaker 1 for wiring according to an embodiment of the present invention is illustrated.
  • the first base 200a and the second base 200b are spaced apart from each other by an impact generated together with the arc.
  • the distance between the respective ends of the coupling protrusions 312 of the auxiliary trip mechanism 300 is formed to be shorter than the shortest distance of the portion surrounding the insertion groove 250 from the upper side in the above state. Accordingly, in the above state, the coupling protrusion 312 may be drawn out from the insertion groove 250 .
  • the auxiliary trip mechanism 300 presses the elastic member 400 and is coupled to the insertion groove 250 . Accordingly, in the auxiliary trip mechanism 300 , the coupling protrusion 312 is drawn out from the insertion groove 250 by the restoring force applied by the elastic member 400 (arrow a).
  • a sub-rotation shaft 150 is rotatably through-coupled to the rotation shaft portion 330 of the auxiliary trip mechanism 300 . Accordingly, the auxiliary trip mechanism 300 is rotated in a direction toward the nail 120 about the sub-rotation shaft 150 , that is, counterclockwise in the illustrated embodiment (arrow b).
  • the auxiliary trip mechanism 300 As the auxiliary trip mechanism 300 is rotated, the auxiliary shooter 320 is also rotated in the same direction so that the striking surface 321 strikes the nail 120 (arrow c). The hit nail 120 is rotated and performs a tripping operation (arrow d).
  • the nail 120 is rotated by the auxiliary trip mechanism 300 as well as the shooter 110 to perform the trip operation, the reliability of the trip operation can be improved.
  • FIG. 16 a process of returning the circuit breaker 1 for wiring according to an embodiment of the present invention to an initial state is illustrated.
  • An external force is applied to the lever 30 to rotate the lever 30 in a direction toward the nail 120 or the crossbar 130 (arrow e).
  • the rotated lever 30 presses the pressing surface 311 . Accordingly, the auxiliary trip mechanism 300 is rotated in a direction opposite to the nail 120 (clockwise in the illustrated embodiment) around the sub-rotation shaft 150 (arrow f).
  • the auxiliary trip mechanism 300 is rotated while pressing the elastic member 400 positioned below it (arrow g).
  • the distance between each end of the coupling protrusion 312 of the auxiliary trip mechanism 300 is formed to be longer than the shortest distance of the portion surrounding the insertion groove 250 from the upper side in the above state.
  • the coupling protrusion 312 is inserted into the insertion groove 250 by fitting or interference fitting.
  • the coupling may be referred to as a hook fit.
  • the auxiliary trip mechanism 300 can be easily returned to the initial state only by manipulating the lever 30 .
  • the auxiliary trip mechanism 300 coupled to the base 200 is not arbitrarily separated from the base 200 , the operational reliability of the circuit breaker 1 for wiring can be improved.

Landscapes

  • Breakers (AREA)

Abstract

L'invention concerne un disjoncteur. Un mécanisme de déclenchement auxiliaire du disjoncteur selon un mode de réalisation de la présente invention est couplé au disjoncteur de manière à pouvoir tourner par un impact généré conjointement avec un arc. Le mécanisme de déclenchement auxiliaire tourne pour frapper un clou, ce qui permet de réaliser en outre une opération de déclenchement. Par conséquent, l'opération de déclenchement du disjoncteur peut être réalisée de manière fiable.
PCT/KR2021/017395 2020-11-30 2021-11-24 Disjoncteur WO2022114772A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202180055099.3A CN116097388A (zh) 2020-11-30 2021-11-24 布线用断路器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020200164861A KR102510845B1 (ko) 2020-11-30 2020-11-30 배선용 차단기
KR10-2020-0164861 2020-11-30

Publications (1)

Publication Number Publication Date
WO2022114772A1 true WO2022114772A1 (fr) 2022-06-02

Family

ID=81754640

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2021/017395 WO2022114772A1 (fr) 2020-11-30 2021-11-24 Disjoncteur

Country Status (3)

Country Link
KR (1) KR102510845B1 (fr)
CN (1) CN116097388A (fr)
WO (1) WO2022114772A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102661736B1 (ko) * 2022-08-19 2024-04-26 엘에스일렉트릭(주) 결합 부재 및 이를 포함하는 전력 전자기기

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5512720A (en) * 1993-04-16 1996-04-30 Merlin Gerin Auxiliary trip device for a circuit breaker
KR100676967B1 (ko) * 2005-12-28 2007-02-02 엘에스산전 주식회사 배선용 차단기
US20080135389A1 (en) * 2006-11-02 2008-06-12 Schneider Electric Industries Sas Extended actuating device for a circuit breaker including a trip assistance device
KR100990256B1 (ko) * 2008-12-31 2010-10-27 엘에스산전 주식회사 4극 배선용 차단기의 보조장치 및 이를 갖는 4극 배선용 차단기
KR20150097289A (ko) * 2014-02-18 2015-08-26 엘에스산전 주식회사 보조트립장치 및 이를 구비한 회로 차단기

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200220198Y1 (ko) * 1998-12-09 2001-05-02 이종수 배선용 차단기의 트립장치
JP2003234056A (ja) * 2002-02-06 2003-08-22 Mitsubishi Electric Corp 回路遮断器
KR101198972B1 (ko) 2008-10-14 2012-11-07 현대중공업 주식회사 배선용 차단기의 열동 가조정형 트립장치 구조
KR20110030937A (ko) 2009-09-18 2011-03-24 현대중공업 주식회사 배선용 차단기의 바이메탈 트립 구조
KR102017803B1 (ko) * 2017-10-31 2019-09-03 엘에스산전 주식회사 회로 차단기
KR20190001731U (ko) * 2017-12-28 2019-07-08 엘에스산전 주식회사 배선용 차단기의 슈터 장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5512720A (en) * 1993-04-16 1996-04-30 Merlin Gerin Auxiliary trip device for a circuit breaker
KR100676967B1 (ko) * 2005-12-28 2007-02-02 엘에스산전 주식회사 배선용 차단기
US20080135389A1 (en) * 2006-11-02 2008-06-12 Schneider Electric Industries Sas Extended actuating device for a circuit breaker including a trip assistance device
KR100990256B1 (ko) * 2008-12-31 2010-10-27 엘에스산전 주식회사 4극 배선용 차단기의 보조장치 및 이를 갖는 4극 배선용 차단기
KR20150097289A (ko) * 2014-02-18 2015-08-26 엘에스산전 주식회사 보조트립장치 및 이를 구비한 회로 차단기

Also Published As

Publication number Publication date
KR20220076074A (ko) 2022-06-08
CN116097388A (zh) 2023-05-09
KR102510845B1 (ko) 2023-03-16

Similar Documents

Publication Publication Date Title
WO2021182788A2 (fr) Disjoncteur à air
WO2022114772A1 (fr) Disjoncteur
WO2020256263A1 (fr) Relais à courant continu
WO2021182786A1 (fr) Unité d'extinction d'arc et disjoncteur à air la comprenant
WO2021040174A1 (fr) Unité de formation de trajet d'arc et relais à courant continu la comprenant
WO2021040176A1 (fr) Unité de formation de trajet d'arc et relais à courant continu la comprenant
WO2022231219A1 (fr) Unité d'extinction d'arc et disjoncteur à air la comprenant
WO2021182789A2 (fr) Disjoncteur à air
WO2021177675A1 (fr) Ensemble d'extinction d'arc
WO2021107292A1 (fr) Ensemble bobine de déclenchement
WO2022181985A1 (fr) Interrupteur coupe-charge
WO2021187784A2 (fr) Élément de blocage et disjoncteur pour câblage électrique le comprenant
WO2022240033A1 (fr) Unité de coupure de circuit et disjoncteur à air la comprenant
WO2021112343A1 (fr) Unité de formation de trajet d'arc et relais à courant continu la comportant
WO2022240272A1 (fr) Unité d'extinction d'arc et disjoncteur à air la comprenant
WO2022240004A1 (fr) Interrupteur et disjoncteur à air le comprenant
WO2022234989A1 (fr) Unité de disjoncteur et disjoncteur à air la comprenant
WO2022234990A1 (fr) Unité d'extinction d'arc et disjoncteur à air la comprenant
WO2022240032A1 (fr) Unité d'extinction d'arc, unité d'interruption et disjoncteur à air correspondant
WO2022181986A1 (fr) Boîte de soufflage et interrupteur de chargement la comprenant
WO2022181980A1 (fr) Boîte de soufflage et interrupteur coupe-charge doté de ladite boîte de soufflage
WO2022098021A1 (fr) Ensemble de verrouillage et contacteur magnétique le comprenant
WO2021100984A1 (fr) Ensemble barre transversale et ensemble de déclenchement le comprenant
WO2023132600A1 (fr) Structure de borne
WO2021096004A1 (fr) Dispositif de déclenchement

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21898598

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21898598

Country of ref document: EP

Kind code of ref document: A1